Hey, so I have an issue with uploading a world onto a realm. I am trying to replace a world on a realm with a world I have previously used before it was reset into the new one. I would like it to revert back to the old world. However, it can't be uploaded for some reason. Whenever I tried to upload the world, a box would appear and say "Failed \ An error occurred". Everything went smooth before the box appeared. I pressed "Cancel" and tried to upload it again numerous times, but it doesn't seem to work. Thank you for reading this and I hope you are able to resolve this (This is on Minecraft Pocket Edition)